Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare non-readonly, openWorld, non-idempotent and non-destructive. The description adds real value beyond them by disclosing the outcome: an Ed25519-signed receipt and +35 Founder Reputation. It does not cover failure modes, key-scope requirements, or whether submissions are moderated.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.